package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;
import java.util.List;

/**
 * @author Administrator
 */
@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    @Override
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        // TODO 后期需要进行md5加密，然后再进行比对
        password= DigestUtils.md5DigestAsHex(password.getBytes());
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus().equals(StatusConstant.DISABLE)) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }
    /**
     * 新增员工
     * @param employeeDTO
     *
     */
    @Override
    public void save(EmployeeDTO employeeDTO) {
Employee employee=new Employee();
//  对象属性拷贝
        BeanUtils.copyProperties(employeeDTO,employee);

// 设置账号的状态  默认正常的状态 1 代表正常  0 代表锁定
        employee.setStatus(StatusConstant.ENABLE);

        //  设置密码  默认123456
        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));
        //  设置当前创建以及修改时间
        employee.setCreateTime(LocalDateTime.now());
        employee.setUpdateTime(LocalDateTime.now());

        // 设置当前记录创建人Id 以及修改人Id
        employee.setCreateUser(BaseContext.getCurrentId());
        employee.setUpdateUser(BaseContext.getCurrentId());
        employeeMapper.insert(employee);
    }

    /**
     * 分页查询
     *
     * @param employeePageQueryDTO
     * @return
     */
    @Override
    public PageResult pageQuery(EmployeePageQueryDTO employeePageQueryDTO) {
        // select * from employee limit 0,10
        //开始分页查询
        //PageHelper.startPage(employeePageQueryDTO.getPage(), employeePageQueryDTO.getPageSize());
        PageHelper.startPage(employeePageQueryDTO.getPage(),employeePageQueryDTO.getPageSize());
       // Page<Employee> employeePage =  employeeMapper.pageQuery(employeePageQueryDTO);
        Page<Employee> page = employeeMapper.PAGE(employeePageQueryDTO);
//        Page<Employee> employeePage = employeeMapper.pageQuery(employeePageQueryDTO);//后续定调用mapper进行分页查询
        return new PageResult(page.getTotal(), page.getResult());
    }

    @Override
    public void startOrStop(Integer status, Long id) {
        Employee employee=new Employee();
        employee.setId(id);
        employee.setStatus(status);
        employee.setUpdateUser(BaseContext.getCurrentId());
        employee.setUpdateTime(LocalDateTime.now());
        employeeMapper.update(employee);
    }

    @Override
        /**
         * 根据id查询员工
         *
         * @param id
         * @return
         */
        public Employee getById(Long id) {
            Employee employee = employeeMapper.getById(id);
            employee.setPassword("****");
            return employee;
        }
        /**
         * 编辑员工信息
         *
         * @param employeeDTO
         */
        @Override
        public void update(EmployeeDTO employeeDTO){
            Employee employee = new Employee();
            BeanUtils.copyProperties(employeeDTO, employee);

            employee.setUpdateTime(LocalDateTime.now());
            employee.setUpdateUser(BaseContext.getCurrentId());

            employeeMapper.update(employee);
        }
    }

